Rivets are a type of mechanical fastener that are used to permanently join two or more materials together. They consist of a cylindrical shaft with a head at one end and a tail at the other. The most common types of rivets include solid rivets, blind rivets, tubular rivets, drive rivets, split rivets and shoulder rivets.

Rivets are commonly used in applications such as construction, automotive manufacturing, and aerospace engineering, where they provide strong, reliable, and permanent joints that can withstand high levels of stress and vibration.